mirror of
https://github.com/thingsboard/thingsboard-gateway
synced 2025-10-26 22:31:42 +08:00
435 lines
22 KiB
Python
435 lines
22 KiB
Python
# Copyright 2019. ThingsBoard
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging.config
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import logging.handlers
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import time
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# import yaml
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from yaml import safe_dump, safe_load
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from simplejson import load, loads, dumps
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from os import listdir, path
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from sys import getsizeof
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from threading import Thread
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from queue import Queue
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from thingsboard_gateway.gateway.tb_client import TBClient
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from thingsboard_gateway.gateway.tb_logger import TBLoggerHandler
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from thingsboard_gateway.tb_utility.tb_utility import TBUtility
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from thingsboard_gateway.storage.memory_event_storage import MemoryEventStorage
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from thingsboard_gateway.storage.file_event_storage import FileEventStorage
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from thingsboard_gateway.gateway.tb_gateway_remote_configurator import RemoteConfigurator
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log = logging.getLogger('service')
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class TBGatewayService:
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def __init__(self, config_file=None):
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if config_file is None:
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config_file = path.dirname(path.dirname(path.abspath(__file__))) + '/config/tb_gateway.yaml'
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with open(config_file) as config:
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config = safe_load(config)
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self._config_dir = path.dirname(path.abspath(config_file)) + '/'
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logging.config.fileConfig(self._config_dir + "logs.conf")
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global log
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log = logging.getLogger('service')
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self.available_connectors = {}
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self.__connector_incoming_messages = {}
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self.__connected_devices = {}
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self.__saved_devices = {}
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self.__events = []
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self.__rpc_requests_in_progress = {}
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self.__connected_devices_file = "connected_devices.json"
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self.tb_client = TBClient(config["thingsboard"])
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self.main_handler = logging.handlers.MemoryHandler(1000)
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self.remote_handler = TBLoggerHandler(self)
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self.main_handler.setTarget(self.remote_handler)
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self._default_connectors = {
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"mqtt": "MqttConnector",
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"modbus": "ModbusConnector",
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"opcua": "OpcUaConnector",
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"ble": "BLEConnector",
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}
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self._implemented_connectors = {}
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self.__event_storage_types = {
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"memory": MemoryEventStorage,
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"file": FileEventStorage,
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}
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self.__load_connectors(config)
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self._connect_with_connectors()
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self.__remote_configurator = None
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if config["thingsboard"].get("remoteConfiguration"):
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try:
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self.__remote_configurator = RemoteConfigurator(self, config)
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self.__check_shared_attributes()
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except Exception as e:
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self.__load_connectors(config)
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self._connect_with_connectors()
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log.exception(e)
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self.__load_persistent_devices()
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self.__published_events = Queue(0)
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self.__send_thread = Thread(target=self.__read_data_from_storage, daemon=True,
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name="Send data to Thingsboard Thread")
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self.__event_storage = self.__event_storage_types[config["storage"]["type"]](config["storage"])
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self.tb_client.connect()
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self.tb_client.client.gw_set_server_side_rpc_request_handler(self.__rpc_request_handler)
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self.tb_client.client.set_server_side_rpc_request_handler(self.__rpc_request_handler)
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self.tb_client.client.subscribe_to_all_attributes(self.__attribute_update_callback)
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self.tb_client.client.gw_subscribe_to_all_attributes(self.__attribute_update_callback)
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self.__send_thread.start()
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try:
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gateway_statistic_send = 0
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while True:
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cur_time = time.time()
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if self.__rpc_requests_in_progress and self.tb_client.is_connected():
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for rpc_in_progress in self.__rpc_requests_in_progress:
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if cur_time >= self.__rpc_requests_in_progress[rpc_in_progress][1]:
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self.__rpc_requests_in_progress[rpc_in_progress][2](rpc_in_progress)
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self.cancel_rpc_request(rpc_in_progress)
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time.sleep(0.1)
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else:
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time.sleep(1)
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if cur_time - gateway_statistic_send > 60.0 and self.tb_client.is_connected():
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summary_messages = {"eventsProduced": 0, "eventsSent": 0}
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telemetry = {}
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for connector in self.available_connectors:
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if self.available_connectors[connector].is_connected():
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connector_camel_case = connector[0].lower() + connector[1:].replace(' ', '')
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telemetry[(connector_camel_case + ' EventsProduced').replace(' ', '')] = \
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self.available_connectors[connector].statistics['MessagesReceived']
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telemetry[(connector_camel_case + ' EventsSent').replace(' ', '')] = \
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self.available_connectors[connector].statistics['MessagesSent']
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self.tb_client.client.send_telemetry(telemetry)
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summary_messages['eventsProduced'] += telemetry[
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str(connector_camel_case + ' EventsProduced').replace(' ', '')]
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summary_messages['eventsSent'] += telemetry[
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str(connector_camel_case + ' EventsSent').replace(' ', '')]
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self.tb_client.client.send_telemetry(summary_messages)
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gateway_statistic_send = time.time()
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except Exception as e:
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log.exception(e)
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for device in self.__connected_devices:
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log.debug("Close connection for device %s", device)
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try:
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current_connector = self.__connected_devices[device].get("connector")
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if current_connector is not None:
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current_connector.close()
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log.debug("Connector %s closed connection.", current_connector.get_name())
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except Exception as e:
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log.error(e)
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def __attributes_parse(self, content, *args):
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try:
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shared_attributes = content.get("shared")
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client_attributes = content.get("client")
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if self.__remote_configurator is not None:
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self.__remote_configurator.send_current_configuration()
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if shared_attributes is not None:
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if self.__remote_configurator is not None and shared_attributes.get("configuration"):
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self.__remote_configurator.process_configuration(shared_attributes.get("configuration"))
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elif client_attributes is not None:
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log.debug("Client attributes received")
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except Exception as e:
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log.exception(e)
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def get_config_path(self):
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return self._config_dir
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def __check_shared_attributes(self):
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self.tb_client.client.request_attributes(callback=self.__attributes_parse)
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def __load_connectors(self, config):
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self._connectors_configs = {}
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if not config.get("connectors"):
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raise Exception("Configuration for connectors not found, check your config file.")
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for connector in config['connectors']:
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try:
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if connector.get('class') is not None:
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try:
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connector_class = TBUtility.check_and_import(connector['type'], connector['class'])
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self._implemented_connectors[connector['type']] = connector_class
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except Exception as e:
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log.error("Exception when loading the custom connector:")
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log.exception(e)
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elif connector.get("type") is not None and connector["type"] in self._default_connectors:
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try:
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connector_class = TBUtility.check_and_import(connector["type"], self._default_connectors[connector["type"]], default=True)
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self._implemented_connectors[connector["type"]] = connector_class
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except Exception as e:
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log.error("Error on loading default connector:")
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log.exception(e)
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else:
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log.error("Connector with config %s - not found", safe_dump(connector))
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with open(self._config_dir + connector['configuration'], 'r') as conf_file:
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connector_conf = load(conf_file)
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if not self._connectors_configs.get(connector['type']):
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self._connectors_configs[connector['type']] = []
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self._connectors_configs[connector['type']].append({connector['configuration']: connector_conf})
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except Exception as e:
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log.error(e)
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def _connect_with_connectors(self):
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for connector_type in self._connectors_configs:
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for connector_config in self._connectors_configs[connector_type]:
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for config_file in connector_config:
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connector = None
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try:
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connector = self._implemented_connectors[connector_type](self, connector_config[config_file],
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connector_type)
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self.available_connectors[connector.get_name()] = connector
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connector.open()
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except Exception as e:
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log.exception(e)
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if connector is not None:
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connector.close()
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def __send_statistic(self):
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self.tb_client.client.gw_send_telemetry()
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def send_to_storage(self, connector_name, data):
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self._send_to_storage(connector_name, data)
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def _send_to_storage(self, connector_name, data):
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if not TBUtility.validate_converted_data(data):
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log.error("Data from %s connector is invalid.", connector_name)
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return
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if data["deviceName"] not in self.get_devices():
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self.add_device(data["deviceName"],
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{"connector": self.available_connectors[connector_name]}, wait_for_publish=True)
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if not self.__connector_incoming_messages.get(connector_name):
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self.__connector_incoming_messages[connector_name] = 0
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else:
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self.__connector_incoming_messages[connector_name] += 1
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telemetry = {}
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for item in data["telemetry"]:
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telemetry = {**telemetry, **item}
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data["telemetry"] = {"ts": int(time.time() * 1000), "values": telemetry}
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json_data = dumps(data)
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save_result = self.__event_storage.put(json_data)
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if not save_result:
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log.error('Data from device "%s" cannot be saved, connector name is %s.',
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data["deviceName"],
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connector_name)
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def __read_data_from_storage(self):
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devices_data_in_event_pack = {}
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while True:
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try:
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if self.tb_client.is_connected():
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size = getsizeof(devices_data_in_event_pack)
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events = self.__event_storage.get_event_pack()
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if events:
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for event in events:
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try:
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current_event = loads(event)
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except Exception as e:
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log.exception(e)
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continue
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if not devices_data_in_event_pack.get(current_event["deviceName"]):
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devices_data_in_event_pack[current_event["deviceName"]] = {"telemetry": [],
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"attributes": {}}
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if current_event.get("telemetry"):
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if type(current_event["telemetry"]) == list:
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for item in current_event["telemetry"]:
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size += getsizeof(item)
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if size >= 48000:
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if not self.tb_client.is_connected(): break
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self.__send_data(devices_data_in_event_pack)
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size = 0
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devices_data_in_event_pack[current_event["deviceName"]]["telemetry"].append(item)
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else:
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if not self.tb_client.is_connected(): break
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size += getsizeof(current_event["telemetry"])
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if size >= 48000:
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self.__send_data(devices_data_in_event_pack)
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size = 0
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devices_data_in_event_pack[current_event["deviceName"]]["telemetry"].append(current_event["telemetry"])
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if current_event.get("attributes"):
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if type(current_event["attributes"]) == list:
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for item in current_event["attributes"]:
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if not self.tb_client.is_connected(): break
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size += getsizeof(item)
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if size >= 48000:
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self.__send_data(devices_data_in_event_pack)
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size = 0
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devices_data_in_event_pack[current_event["deviceName"]][
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"attributes"].update(
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item.items())
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else:
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if not self.tb_client.is_connected(): break
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size += getsizeof(current_event["attributes"].items())
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if size >= 48000:
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self.__send_data(devices_data_in_event_pack)
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size = 0
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devices_data_in_event_pack[current_event["deviceName"]]["attributes"].update(
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current_event["attributes"].items())
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if devices_data_in_event_pack:
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if not self.tb_client.is_connected(): break
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self.__send_data(devices_data_in_event_pack)
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if self.tb_client.is_connected():
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success = True
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while not self.__published_events.empty():
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event = self.__published_events.get()
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try:
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success = event.get() == event.TB_ERR_SUCCESS
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except Exception as e:
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log.exception(e)
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success = False
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if success:
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self.__event_storage.event_pack_processing_done()
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del devices_data_in_event_pack
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devices_data_in_event_pack = {}
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else:
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break
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else:
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time.sleep(.01)
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else:
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time.sleep(.1)
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except Exception as e:
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log.exception(e)
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time.sleep(1)
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def __send_data(self, devices_data_in_event_pack):
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for device in devices_data_in_event_pack:
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self.__published_events.put(self.tb_client.client.gw_send_attributes(device,
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devices_data_in_event_pack[
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device][
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"attributes"]))
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self.__published_events.put(self.tb_client.client.gw_send_telemetry(device,
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devices_data_in_event_pack[
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device][
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"telemetry"]))
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devices_data_in_event_pack[device] = {"telemetry": [], "attributes": {}}
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def __rpc_request_handler(self, _, content):
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try:
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device = content.get("device")
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if device is not None:
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connector = self.get_devices()[device].get("connector")
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if connector is not None:
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connector.server_side_rpc_handler(content)
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else:
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log.error("Received RPC request but connector for device %s not found. Request data: \n %s",
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content["device"],
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dumps(content))
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else:
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log.debug("RPC request with no device param.")
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log.debug(content)
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except Exception as e:
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log.exception(e)
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def rpc_with_reply_processing(self, topic, content):
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req_id = self.__rpc_requests_in_progress[topic][0]["data"]["id"]
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device = self.__rpc_requests_in_progress[topic][0]["device"]
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self.send_rpc_reply(device, req_id, content)
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self.cancel_rpc_request(topic)
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def send_rpc_reply(self, device, req_id, content):
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self.tb_client.client.gw_send_rpc_reply(device, req_id, content)
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def register_rpc_request_timeout(self, content, timeout, topic, cancel_method):
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self.__rpc_requests_in_progress[topic] = (content, timeout, cancel_method)
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def cancel_rpc_request(self, rpc_request):
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del self.__rpc_requests_in_progress[rpc_request]
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def __attribute_update_callback(self, content, *args):
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if content.get('device') is not None:
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try:
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self.__connected_devices[content["device"]]["connector"].on_attributes_update(content)
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except Exception as e:
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log.error(e)
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else:
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if content.get('RemoteLoggingLevel') == 'NONE':
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self.remote_handler.deactivate()
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log.info('Remote logging has being deactivated.')
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elif content.get('RemoteLoggingLevel') is not None:
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self.remote_handler.activate(content.get('RemoteLoggingLevel'))
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log.info('Remote logging has being activated.')
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else:
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self.__attributes_parse(content)
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def add_device(self, device_name, content, wait_for_publish=False):
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if device_name not in self.__saved_devices:
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self.__connected_devices[device_name] = content
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self.__saved_devices[device_name] = content
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if wait_for_publish:
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self.tb_client.client.gw_connect_device(device_name).wait_for_publish()
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else:
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self.tb_client.client.gw_connect_device(device_name)
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self.__save_persistent_devices()
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def update_device(self, device_name, event, content):
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if event == 'connector' and self.__connected_devices[device_name].get(event) != content:
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self.__save_persistent_devices()
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self.__connected_devices[device_name][event] = content
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def del_device(self, device_name):
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del self.__connected_devices[device_name]
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self.tb_client.client.gw_disconnect_device(device_name)
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self.__save_persistent_devices()
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def get_devices(self):
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return self.__connected_devices
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def __load_persistent_devices(self):
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devices = {}
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if self.__connected_devices_file in listdir(self._config_dir) and \
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path.getsize(self._config_dir + self.__connected_devices_file) > 0:
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try:
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with open(self._config_dir + self.__connected_devices_file) as devices_file:
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devices = load(devices_file)
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except Exception as e:
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log.exception(e)
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else:
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connected_devices_file = open(self._config_dir + self.__connected_devices_file, 'w')
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connected_devices_file.close()
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if devices is not None:
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log.debug("Loaded devices:\n %s", devices)
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for device_name in devices:
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try:
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if self.available_connectors.get(devices[device_name]):
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self.__connected_devices[device_name] = {
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"connector": self.available_connectors[devices[device_name]]}
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else:
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log.warning("Device %s connector not found, maybe it had been disabled.", device_name)
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except Exception as e:
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log.exception(e)
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continue
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else:
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log.debug("No device found in connected device file.")
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self.__connected_devices = {} if self.__connected_devices is None else self.__connected_devices
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def __save_persistent_devices(self):
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with open(self._config_dir + self.__connected_devices_file, 'w') as config_file:
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try:
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data_to_save = {}
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for device in self.__connected_devices:
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if self.__connected_devices[device]["connector"] is not None:
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data_to_save[device] = self.__connected_devices[device]["connector"].get_name()
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config_file.write(dumps(data_to_save, indent=2, sort_keys=True))
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except Exception as e:
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log.exception(e)
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log.debug("Saved connected devices.")
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if __name__ == '__main__':
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TBGatewayService(path.dirname(path.dirname(path.abspath(__file__))) + '/config/tb_gateway.yaml')
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